Improvement in lamps



being elevated by top thereof.

PATENT "OFFICE.

. onAnLEso; srANsnLL, 0F MIDDLEBOROUGHQASSIGN-OR TO HIMSELF, AND

AARON ROOKWOOD, on NEWTON, MASSACHUSETTS.

IMPROVEMENT IN LAMPS.

s Specification forming part of Letters Patent No. 35,655, dated June 17, 1862.

To alZ tuhom it mctpfconcern: a Be it known that I, CHARLES (LSTANSELL,

arcitizen of the United States of America, and

J 1 a resident of Middleborough,in the county of Plymouth and State of Massachusetts, have invented a newand useful Improvement in Lamps; andI do hereby declare the same to be fully described iirthe following specificadrawings, of which elevation, and Fig. 2 a

tion, and representedqin the accompanying Figure 1 is a front vertical section, of axlamp as constructedin Q accordance with my invention.

The said lamp is intendedto burn coal-oil or other liquid rich incarbon.

The nature ofmy improvement consists in combining andarranging with the wick, the

wick-tube, and theflame-adjuster of a lamp, in

manner substantially as hereinafter described,

a vapor interceptor and conduit,.whereby the f vaporgeneratedbytheheat of that'part of the wick tube which, mayextendwithin the oilreservoir may beintercepted and conducted to theflame to be burned thereby; also, in

y combining and arranging with the flame-adjuster and the vapor interceptor andconduit,

. a heat-insulator,by which the heat of theflameadjuster may be insulated more or less from .the vapor-interceptor.

The peculiariobjectof my invention is to prevent the escape of hydrocarbon vapor throughthe neck or wick-tube opening at the top of a lamp-body when such body may containa liquid'hydrocarbon in the process of a wick and burned at the" In the drawings, A denotes a lamp which is furnished with astationary cylindrical wicktube, B, so applied tothe lamp-bodyas to ex- Q tend upward from. the bottom of its oil-reservoir b and have an air-passage, 0, leading through the stand of the lamp in a manner to supply the tube B withair for the flame of the .y wick. The said .wick (shown at D) is to be i tubular, and to surround and fit closely on and i project upward to or above the top of the tube B, which should extend some considerable distanoe above the lampcap E. A female screw, Wet-is cut in the mouth of I the cap E, and receives the tubular vaporinterceptor F, whieh is screwed into it. Thevapor-interceptor is a tubehaving a bore whosediameter is somewhat passage, G, between the said interceptor and the wick. The interceptor is to be continued upward, and to be surmounted by the flameadjustcr H, which is a short tube or annulus surrounding and-fitting closely at its upper end to the outside cylindrical surface of the upper part of the wick. Y

Thevapor-interceptor andtheflame-adjuster maybe made in one piece of metal or material; but I prefer to interpose between the lampbody or the vapor-interceptor and the flame of the wick a material or substance which,while performing the functions of surrounding the wick and supporting the flame-adjuster, shall be a non-conductor of heat. Such portion of my invention 1 term a heat insulator or interceptor, it being shown at I. It consists of a hollow vessel, made of glass, with a' bulging or conical form, and provided with two open necks, c d, in order that it may be fitted or fixed to the tubes F and H. The said part I serves, also, as a vapor-reservoir. By laying hold of either of the said parts 1? H I, and twining it horizontally, so as to turn the part F, we may either elevate or depress the flameadjuster H with reference to the top of the wick, and by so doing we may regulate the height of the flame.

As the wick-tube is indirect contact with i the flame more or less heat from the latter willbe conducted down such tube, and .will be absorbed by the wick. This will cause much of the liquid which may be taken up by the wick to be vaporized, in which case the tube F, by surrounding the wick and extending into the fluid within the oil-reservoir, will intercept thevapor and conduct it up into the part I, from whence it will pass through the part H to the flame of the wick, where it will be consumed, and thus be made to aid in giving light. Were it not for the tube F and passage G, the said vapor by its tension would escape out of the mouth of the screw-cap, and by passing into the atmosphere surrounding the lamp would not only vitiate it, but impart to it a disagreeable odor.

The passage G enables the combustible vapor to pass freely upward within the tube F and gain uninterrupted access to the flame of the wick. By passing into the chamber of the part I the vapor will have a chance to cool and condense more or less, and to flow back in a liquid state into the lamp.

It will thus be seen that the purpose of my improvement is to prevent the escape of vapor from the lamp, and thus avoid a difficulty incident more or less to most, if not all, the hydrocarbon burners or lamps heretofore in use.

The vapor-interceptor F and the part I may be made in one piece of glass, in which case. they will operate better to so insulate the vapor-interceptor F and the lamp-body A from the flame of the Wick as to prevent the latter from heating them so as to vaporize the liquid contents of the lamp-body.

I do not herein claim the flame-adjuster, nor a supporting-tube therefor, to encompass and fit closely to the wick and screw intothelamp' cap and extend down in the oil-reservoir; but

\Vhat I do claim as my present invention is as follows:

l. Combining and arranging with the wick the wick-tube B and the flame-adjuster H of a lamp, in the manner substantially as described, a vapor-interceptor, F, and conduit or passage G, the same being substantially as and for the purpose above explained.

2. Combining and arranging with the flameadjuster and the vapor interceptor and conduit, as described, a heat-insulator or insulating Vapor-reservoir I, made of a material and so as to operate in manner and for the purpose substantially as specified.

C. C. STANSELL.

\Vitnesses:

R. H. EDDY, F. P. 'IIALE, Jr. 

